The aim of this book is to demonstrate the movement of Greek thought into Arabic via the Syriac language. Al-Hamad devotes the four sections of this book to profiling four different authors who either wrote in Syriac or whose works were transmitted into Arabic via Syriac translations: Porphyry, John Philoponos ('the Grammarian'), Jacob of Edessa and Dionysios of Tellmahre.